The phenomenon of nationality in our species is a subset of group identity. Group/social identity, in turn, goes back thousands (and millions) of years, to all past human societies, pre-human primates, and social carnivores. Through countless centuries and millenia of observational learning and intergenerational transfers, human heritages of nationality (the most prestigious and sovereign of our social identities) have solidified into cultural heritages. Nationality in World History traces the phenomenon of group identity from its pre-human evolutionary roots, to the prehistoricdevelopment of uniquely human social characteristics, through the ancient, medieval, and modern eras of world history.From latter pre-history onwards, we identify three primary heritages of nationality (sovereign group formation) in ourspecies. These are:the Kinship-Ethnic Heritage, the Territorial-Civic Heritage, and the Pastoral-Charismatic Dependency Heritage